Network gateway



FIG. 1 is a front elevational view of a network gateway showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a left-side elevational view thereof;

FIG. 7 is a front, top and right-side perspective view thereof; and,

FIG. 8 is a rear, top and left-side perspective view thereof.

The broken lines shown in the drawing represent subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a network gateway, as shown and described. 